Radio Network Controlling Method, Radio Communication System and Radio Network Controller

1. A radio network controlling method comprising the steps of: transmitting data to a mobile station by using a downlink dedicated channel and a downlink shared channel, measuring transmission power of all the channels and transmission power of other channel than said downlink shared channel, calculating transmission power assigned to said downlink shared channel from the transmission power of other channel than said downlink shared channel, calculating an activity ratio of said transmission power assigned to said downlink shared channel from the transmission power of said all the channels, the transmission power of other channel than said downlink shared channel and said transmission power assigned to said downlink shared channel, and regulating use of said downlink dedicated channel by taking said transmission power assigned to said downlink shared channel and said activity ratio into consideration.

2. The radio network controlling method according to claim 1 , comprising the step of regulating set-up of said downlink dedicated channel when a cell load expected upon set-up of said downlink dedicated channel is higher than a predetermined threshold value, the step of regulating use of said downlink dedicated channel being a step of lowering said predetermined threshold value.

3. The radio network controlling method according to claim 1 , wherein the step of regulating use of said downlink dedicated channel is a step of lowering a transmission rate of said downlink dedicated channel.

4. The radio network controlling method according to claim 1 , wherein the step of regulating use of said downlink dedicated channel is a step of releasing said downlink dedicated channel.

5. The radio network controlling method according to claim 1 , comprising the step of regulating use of said downlink dedicated channel when said activity ratio is larger than a predetermined activity ratio threshold value and said assigned power is smaller than a predetermined power threshold value.

6. The radio network controlling method according to claim 1 , comprising the steps of: counting the number of mobile stations waiting for data transmission using said downlink shared channel, and regulating use of said downlink dedicated channel according to said number of mobile stations, said assigned power and said activity ratio.

7. The radio network controlling method according to claim 6 , comprising the step of: regulating use of said downlink dedicated channel when said number of mobile stations is larger than a predetermined threshold value of the number of mobile stations, said activity ratio is larger than a predetermined activity ratio threshold value and said assigned power is smaller than a predetermined power threshold value.

8. A radio network controlling method comprising the steps of: transmitting data to a mobile station by using a downlink dedicated channel and a downlink shared channel, measuring transmission power of all the channels, transmission power of other channel than said downlink shared channel and a transmission rate of said downlink shared channel, counting the number of mobile stations waiting for data transmission using said downlink shared channel, calculating a maximum transmission rate of said downlink shared channel per mobile station at the time of continuous transmission by power assigned to said downlink shared channel from said number of mobile stations, the transmission power of said all the channels, the transmission power of other channel than said downlink shared channel and said transmission rate, and regulating use of said downlink dedicated channel according to said maximum transmission rate per mobile station, and regulating set-up of said downlink dedicated channel when a cell load expected upon set-up of said downlink dedicated channel is higher than a predetermined threshold value, the step of regulating use of said downlink dedicated channel being a step of lowering said predetermined threshold value, wherein the step of regulating use of said downlink dedicated channel is executed when said maximum transmission rate per mobile station is smaller than a predetermined threshold value.

9. The radio network controlling method according to claim 8 , wherein the step of regulating use of said downlink dedicated channel is a step of lowering a transmission rate of said downlink dedicated channel.

10. The radio network controlling method according to claim 8 , wherein the step of regulating use of said downlink dedicated channel is a step of releasing said downlink dedicated channel.

11. The radio network controlling method according to claim 8 , comprising the steps of: calculating power assigned to said downlink shared channel, and regulating use of said downlink dedicated channel according to said maximum transmission rate per mobile station and the power assigned to said downlink shared channel.

12. A radio communication system comprising: a transmitting unit configured to transmit data to a mobile station by using a downlink dedicated channel and a downlink shared channel, a measuring unit configured to measure transmission power of all the channels and transmission power of other channel than said downlink shared channel, a first calculating unit configured to calculate transmission power assigned to said downlink shared channel from the transmission power of other channel than said downlink shared channel, a second calculating unit configured to calculate an activity ratio of said transmission power assigned to said downlink shared channel from the transmission power of said all the channels, the transmission power of other channel than said downlink shared channel and said transmission power assigned to said downlink shared channel, and a regulating unit configured to regulate use of said downlink dedicated channel by taking said transmission power assigned to said downlink shared channel and said activity ratio into consideration.

13. A radio communication system comprising: a first transmitting unit configured to transmit data to a mobile station by using a downlink dedicated channel, for a second transmitting unit configured to transmit data to the mobile station by using a downlink shared channel, a measuring unit configured to measure transmission power of all the channels, transmission power of other channel than said downlink shared channel and a transmission rate of said downlink shared channel, a counting unit configured to count the number of mobile stations waiting for data transmission using said downlink shared channel, a calculating unit configured to calculate a maximum transmission rate of said downlink shared channel per mobile station when said base station executes continuous transmission by power assigned to said downlink shared channel from said number of mobile stations, the transmission power of said all the channels, the transmission power of other channel than said downlink shared channel and said transmission rate, for a first regulating unit configured to regulate use of said downlink dedicated channel according to said maximum transmission rate per mobile station and a second regulating unit configured to regulate set-up of said downlink dedicated channel when a cell load expected upon set-up of said downlink dedicated channel is higher than a predetermined threshold value, said first regulating unit configured to regulate use of said downlink dedicated channel being a step of lowering said predetermined threshold value, wherein said first regulating unit configured to regulate use of said downlink dedicated channel is executed when said maximum transmission rate per mobile station is smaller than a predetermined threshold value.

14. A radio network controller, wherein a base station comprises: for a first transmitting unit configured to transmit data to a mobile station by using a downlink dedicated channel, for a second transmitting unit configured to transmit data to the mobile station by using a downlink shared channel, and a measuring unit configured to measure transmission power of all the channels and transmission power of other channel than said downlink shared channel to notify said radio network controller of the measurement result, said radio network controller comprising: for a first calculating unit configured to calculate transmission power assigned to said downlink shared channel from the transmission power of other channel than said downlink shared channel, for a second calculating unit configured to calculate an activity ratio of said transmission power assigned to said downlink shared channel from the transmission power of said all the channels, the transmission power of other channel than said downlink shared channel and said transmission power assigned to said downlink shared channel, and a regulating unit configured to regulate use of said downlink dedicated channel by taking said transmission power assigned to said downlink shared channel and said activity ratio into consideration.

15. A radio network controller, wherein a base station comprises: a first transmitting unit configured to transmit data to a mobile station by using a downlink dedicated channel, a second transmitting unit configured to transmit data to the mobile station by using a downlink shared channel, for a first measuring unit configured to measure transmission power of all the channels and transmission power of other channel than said downlink shared channel to notify said radio network controller of the measurement result, and for a second measuring unit configured to measure a transmission rate of said downlink shared channel to notify said radio network controller of the measurement result, said radio network controller comprising: a counting unit configured to count the number of mobile stations waiting for data transmission using said downlink shared channel, a calculating unit configured to calculate a maximum transmission rate of said downlink shared channel per mobile station when said base station executes continuous transmission by power assigned to said downlink shared channel from said number of mobile stations, the transmission power of said all the channels, the transmission power of other channel than said downlink shared channel and said transmission rate, and a regulating unit configured to regulate use of said downlink dedicated channel according to said maximum transmission rate per mobile station.